公开(公告)号：US20250060656A1

公开(公告)日：2025-02-20

申请号：US18774886

申请日：2024-07-16

Applicant: Qisda Corporation

Inventor： Ching-Tze Huang ,  Yu Cheng Chen

IPC: G03B21/20 ,  G03B21/28

Abstract: An illumination system, configured to generate an illumination light beam, is provided. The illumination system includes an excitation light source configured to emit an excitation light beam and a light guide module, a collimation lens group, and a wavelength conversion element disposed on a transmission path of the excitation light beam. After being emitted from the excitation light source, the excitation light beam is reflected by the light guide module, passes through the collimation lens group, and is transmitted to the wavelength conversion element. A part of the excitation light beam is reflected by the wavelength conversion element, and passes through the collimation lens group and the light guide module. Another part of the excitation light beam is converted into a conversion light beam by the wavelength conversion element. The conversion light beam passes through the collimation lens group and the light guide module. A projection device is also provided.